Effects of electron-transfer chemical modification on the electrical characteristics of graphene

Xiao Yan Fan; Ryo Nouchi; Li Chang Yin; Katsumi Tanigaki

doi:10.1088/0957-4484/21/47/475208

Effects of electron-transfer chemical modification on the electrical characteristics of graphene

Xiao Yan Fan, Ryo Nouchi, Li Chang Yin, Katsumi Tanigaki

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Because of the large reactivity of single layer graphene to electron-transfer chemistries, 4-nitrobenzene diazonium tetrafluoroborate is employed to modify the electrical properties of graphene field-effect transistors. After modification, the transfer characteristics of chemically modified graphene show a reduction in the minimum conductivity, electron-hole mobility asymmetry, a decrease in the electron/hole mobility, and a positive shift of the charge neutrality point with broadening of the minimum conductivity region. These phenomena are attributed to a dediazoniation reaction and the adsorbates on the graphene surface.

Original language	English
Article number	475208
Journal	Nanotechnology
Volume	21
Issue number	47
DOIs	https://doi.org/10.1088/0957-4484/21/47/475208
Publication status	Published - 2010 Nov 26

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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AU - Yin, Li Chang

AU - Tanigaki, Katsumi

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AB - Because of the large reactivity of single layer graphene to electron-transfer chemistries, 4-nitrobenzene diazonium tetrafluoroborate is employed to modify the electrical properties of graphene field-effect transistors. After modification, the transfer characteristics of chemically modified graphene show a reduction in the minimum conductivity, electron-hole mobility asymmetry, a decrease in the electron/hole mobility, and a positive shift of the charge neutrality point with broadening of the minimum conductivity region. These phenomena are attributed to a dediazoniation reaction and the adsorbates on the graphene surface.

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Effects of electron-transfer chemical modification on the electrical characteristics of graphene

Abstract

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